[单选题]在手枪故障排除操作训练中,应按如下顺序安排训练方法( )。
A.空枪操作掌握动作-教练弹、实弹混合体验巩固动作-教练弹操作熟练动作
B.教练弹操作熟练动作-空枪操作掌握动作-教练弹、实弹混合体验巩固动作
C.空枪操作掌握动作-教练弹操作熟练动作-教练弹、实弹混合体验巩固动作
D.教练弹操作熟练动作-教练弹、实弹混合体验巩固动作-空枪操作掌握动作

查看答案

[判断题]（　）电梯电源应是专用电源。电源的电压波动范围应不超过±7％，而且照明电源应与电梯主电源分开。

查看答案

[填空题] Some theorists view children as passive receivers of experience; others consider them 【B1】 in organizing, structuring, and in some 【B2】 . creating their worlds. A scientist who considers children to be passive does not think they are unresponsive, just that they enter the world ready to absorb 【B3】 knowledge is provided by the environment. According to this view, children are 【B4】 by stimuli in the external environment and driven by 【B5】 needs over which they have little control. Theorists and educators who view the child as 【B6】 passive often 【B7】 direct and carefully structured teaching methods. For example, some methods for teaching children to play the piano contain a 【B8】 of specific steps, chords, and tunes to be learned in a 【B9】 order. The child must master each step 【B10】 proceeding to the next one. 【B11】 an educator who believes that children are active assumes that they learn best when they 【B12】 and select their own learning materials and tasks. When teaching a chi
A. A．external
B．interior
C．exterior
D．internal

查看答案

[单选题]汇聚环故障处理时限（）
A.2小时内
B.3小时内
C.4小时内
D.5小时内

查看答案

[判断题]因误售、误购或误乘需送回时，承运人应免费将旅客送回，在免费送回区间旅客如中途下车可以不予管理。
A.正确
B.错误

查看答案

[单选题]高钾血症时，静脉注射10％葡萄糖酸钙的作用是()
A.使血钾降低
B.纠正酸中毒
C.使钾离子移向细胞内
D.降低神经肌肉应激性
E.对抗钾离子抑制心肌的作用

查看答案

[判断题]为了保护国家安全和公共利益的需要，民航局可以要求公共航空运输企业对其航空安保方案作出紧急修订。
A.正确
B.错误

查看答案

[单项选择]

Not all people got their names (21) their fathers. Some got their names from the places they (22) . For example, a family had lived in a village (23) many green trees and plants was called Green or Greenberg. (24) they lived in a town called Moor, they were (25) the Moores.
Sometimes people got their names from (26) they looked. A (27) person was, perhaps, called Long. If people in a family had (28) hair, the family was sometimes called the Blacks or the Browns. If their hair was (29) , they may have been called the Whites.
People often (30) their names from the kind of (31) they did. A person who (32) clothing was named Taylor. (33) person who baked bread was called Baker. A person who had a very good (34) was named Singer.
After a while these names stayed with people and (35) family names that are still used today.

32（）
A. wore
B. put
C. washed
D. sewed

查看答案

[单选题]220安全标志分别为禁止标志、（）标志、指令标志、提示标志。
A.(A)警示
B.(B)警告
C.(C)提醒
D.(D)检查

查看答案

[不定项选择题]共用题干某生产性物业投资25000万元，预期寿命为5年，净残值为0。每年净现金流量为随机变量，其可能的三种状态及其概率是：(1)5000万元(P=30%)；(2)10000万元（P=50%）；(3)12000万元（P=20%）。基准收益率为12%，已知：(P/ A，12%,5)=3.605。该生产性物业在运行期间的第一年的固定成本为12000万元，产品的销售价格为15万元/件，单位变动成本（含各种税金在内）为11万元/件，生产能力为6000件/年。根据以上资料，回答下列问题：该物业年净现金流量为5000万元时的净现值为（）。
A.-6835
B.-6889
C.-6975
D.-7008

查看答案

[单选题]物体里的电荷朝一定方向运动就形成（）。
A.电压
B.电流
C.电动势
D.电感

查看答案

[单选题]为保证人身安全，除专业人员执行有关规定外，其他人员（包括所携带的物件）与牵引供电设备带电部分的距离，不得小于（）mm。
A.500
B.1000
C.1500
D.2000

查看答案

[单选题]HXD3电力机车主变流器采用( )由车顶直接进风冷却水、油复合式铝板冷却器。
A. 水冷
B.油冷
C.风冷

查看答案

我来回答:

提交